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Manoba chamberlaini sp. n.


Manoba chamberlaini

6-7mm. This is the first of a sequence of small, rather satiny white and grey species with similar facies to the marshalli sequence but much weaker marking and transverse shading, the latter tending to be restricted to the costal zone. Like the
marshalli sequence, they can only be identified reliably from characters of the male genitalia. In chamberlaini the valves are distally rather broad, slightly falcate where the costa reaches the distinctly acute apex. The harpe is robust, acute, flexed at right angles and slightly more distal than in the previous group. The aedeagus has a slender, reflexed hook apically, and the vesica contains a loose group of slightly curved spines. The species appears to be close to M. javanica van Eecke stat. & comb. n. (Java; the taxon vicina Roepke (Sumatra) may also be related, but is based on a single female), having similar ornamentation to the aedeagus and vesica (lacking in the Himalayan melanota of which javanica was originally described as a subspecies). The vesica is longer and narrower in javanica, with the spines more closely associated in a terminal clump. Also related is the Nepalese M. subfuscataria Inoue (1998) comb. n., where the harpe and apical part of the valve are more strongly curved.

Holotype . SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D.Holloway et al.), Site 5, January, Camp 4, Mulu, 1780m. 451463, [low stature upper montane forest], BM noctuid slide 17360.

Paratypes: 2 (slides 17449, 17626) as holotype; 1 (slide 17128) as holotype but Site 3, 453463; 1 (slide 17547) BRUNEI: U. Temburong, Gn. Pagon, 1700m, iv.1981 (I. Gauld).

Geographical range. Borneo.

Habitat preference. All material is from upper montane forest.

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